FormRow helper should not render label for hidden element

[jkavalik]

When using annotations on entities to generate Zend\Form, I noticed that if property has assigned type hidden but there is label set, view helper will render label around it:

<label><span>ID#</span><input name="userId" type="hidden" class="form-control" value=""></label>

IMHO there shouldn't be any label rendered. as it seems weird.
At least from accesibility viewpoint I can refer to http://www.w3.org/TR/WCAG20-TECHS/F68.html saying:
Note 2: The label element is not used for ... Hidden input fields (input type="hidden")

Background:
Label is set on hidden field because we are generating other things from annotation and in this case it is there to set column heading in generated table.

[ThaDafinser]

@jkavalik see the PR. Should fix your issue.

[ThaDafinser]

@jkavalik can u close this issue, since it was merged?